1.5 Unicellular Organisms

Not all living organisms are as complicated as you are.
The first organisms that existed on Earth were made up of just a single cell.
There are still many organisms alive today that consist of only one cell.
What is an organism that is made up of just one cell called?

Is it a plant or an animal?

What is an amoeba?

Where can amoebas be found?

Just like an animal cell, what does an amoeba consist of?

Label a diagram of an amoeba

How do amoebas move?

What do amoebas eat?

How do they eat?

How do amoebas reproduce?

What is this known as?

What happens during binary fusion?

Draw a diagram of an amoeba reproducing

What is a euglena?

Label a diagram of a euglena

Like amoebas, what do euglenas contain?

How do the chloroplasts make food by photosynthesis?

What does the 'eye spot' in the euglena do?

What is the tail-like structure which spins like a propeller, causing the euglena to 'swim' towards the light called?

What does this allow the euglena to do?

What do euglenas eat?

How do euglenas reproduce?